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Finding the Fourth Proportional to 370.98, 511.25 and 361.87

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Solution

The fourth proportional to 370.98, 511.25 and 361.87 is: 498.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.98 : 511.25 = 361.87 : x
  2. Step 2: Convert to fraction form
    370.98/511.25 = 361.87/x
  3. Step 3: Cross multiply
    370.98x = 511.25 × 361.87
  4. Step 4: Simplify right side
    370.98x = 185,002.95
  5. Step 5: Solve for x
    x = 185,002.95/370.98
  6. Step 6: Final answer
    x = 498.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.